ENVIRONMENT

2. it's a verb, it is a synonym of defend + help.
4. it's a modal used for obligation.
5. it's a noun (in 2 parts) that represents a text from Press with an internet source.
6. it's a noun, it's an action, you go walk in the streets for a cause.
9. it's an adjective that comes from "ecology".

1. it's a noun and it's a horrible situation for animals or people.
3. it's a noun, it's a person who don't eat animal products.
4. it's a noun, it's something you eat from animals, like steak for example.
7. it's an interrogative pronoun, it's similar to "who" but for objects and animals.
8. it's an adjective, it's the opposite of old.